US Teaspoons to Milliliters (tsp (US) to mL)
Free online us teaspoon to milliliter converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
VOLUME CONVERTER — INSTANT RESULT
Formula: multiply the us teaspoon value by 4.92892159 — i.e. mL = tsp (US) × 4.92892159
Quick check: 1 tsp (US) = 4.92892159 mL
Quick check: 1 tsp (US) = 4.92892159 mL
US Teaspoons to Milliliters conversion table
| US Teaspoons (tsp (US)) | Milliliters (mL) |
|---|---|
| 1 tsp (US) | 4.92892159 mL |
| 2 tsp (US) | 9.85784319 mL |
| 3 tsp (US) | 14.78676478 mL |
| 4 tsp (US) | 19.71568638 mL |
| 5 tsp (US) | 24.64460797 mL |
| 6 tsp (US) | 29.57352956 mL |
| 7 tsp (US) | 34.50245116 mL |
| 8 tsp (US) | 39.43137275 mL |
| 9 tsp (US) | 44.36029434 mL |
| 10 tsp (US) | 49.28921594 mL |
| 15 tsp (US) | 73.93382391 mL |
| 20 tsp (US) | 98.57843188 mL |
| 25 tsp (US) | 123.22303984 mL |
| 30 tsp (US) | 147.86764781 mL |
| 40 tsp (US) | 197.15686375 mL |
| 50 tsp (US) | 246.44607969 mL |
| 75 tsp (US) | 369.66911953 mL |
| 100 tsp (US) | 492.89215937 mL |
| 250 tsp (US) | 1,232.23039844 mL |
| 500 tsp (US) | 2,464.46079688 mL |
| 1,000 tsp (US) | 4,928.92159375 mL |
How to convert us teaspoons to milliliters
To convert us teaspoons to milliliters, multiply the amount in us teaspoons by 4.92892159. For example, 10 tsp (US) = 49.28921594 mL. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between metric, US customary and imperial volume units. US and UK gallons differ (1 US gal = 3.785411784 L, 1 UK gal = 4.54609 L) — always check which system a recipe or specification uses.
Frequently asked questions
How many milliliters are in one us teaspoon?
One us teaspoon is exactly 4.92892159 milliliters.
How do I convert tsp (US) to mL?
Multiply the tsp (US) value by 4.92892159 to get mL. The converter at the top of this page does this automatically and works in both directions.
How much is 100 us teaspoons in milliliters?
100 us teaspoons equals 492.89215937 milliliters.